Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: unbound (UTSA-2026-123924)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-123924 advisory. In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS...

RockyLinux 8 : unbound (RLSA-2026:69120)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:69120 advisory. unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 Tenable has extracted the preceding description block directly from the...

AlmaLinux 8 : unbound (ALSA-2026:69120)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:69120 advisory. unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 Tenable has extracted the preceding description block directly from the...

Moderate: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and...

MiracleLinux 9 : unbound-1.24.2-3.el9_8.6 (AXSA:2026-1876:12)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1876:12 advisory. unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 Tenable has extracted the preceding description block directly from t...

RLSA-2026:68291 Moderate: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and...

unbound security update

An update is available for unbound. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The unbound packages provide a validating, recursive, and caching DNS or...

unbound security update

An update is available for unbound. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The unbound packages provide a validating, recursive, and caching DNS or DNSS...

RLSA-2026:68292 Moderate: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and...

AlmaLinux 9 : unbound (ALSA-2026:68292)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:68292 advisory. unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 Tenable has extracted the preceding description block directly from the...

AlmaLinux 10 : unbound (ALSA-2026:68291)

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:68291 advisory. unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 Tenable has extracted the preceding description block directly from the...

RockyLinux 10 : unbound (RLSA-2026:68291)

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:68291 advisory. unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 Tenable has extracted the preceding description block directly from the...

unbound: Unbound: DNS cache poisoning via UDP source port predictability

A flaw in Unbound's SOREUSEPORT implementation reduces UDP source port entropy by allowing attackers to map ports to specific worker threads. This enables DNS cache poisoning, potentially leading to traffic redirection or unauthorized information disclosure...

Moderate: Red Hat Security Advisory: unbound security update

An update for unbound is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

RHEL 9 : unbound (RHSA-2026:68292)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:68292 advisory. The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via...

ALSA-2026:68291 Moderate: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and...

RHEL 10 : unbound (RHSA-2026:68291)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:68291 advisory. The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via...

ALSA-2026:68292 Moderate: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and...

Moderate: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: DNS cache poisoning via UDP source port predictability CVE-2026-50252 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and...

CVE-2026-50252

A flaw in Unbound's SOREUSEPORT implementation reduces UDP source port entropy by allowing attackers to map ports to specific worker threads. This enables DNS cache poisoning, potentially leading to traffic redirection or unauthorized information disclosure. Mitigation Disable the so-reuseport...